diff --git a/src/network/network.h b/src/network/network.h
index 9b73431d3f..7d1b62f0ca 100644
--- a/src/network/network.h
+++ b/src/network/network.h
@@ -83,7 +83,7 @@ enum {
 	NETWORK_TICK_FLAG_CHECKSUMS = 1 << 0,
 };
 
-class ObjectRepositoryItem;
+struct ObjectRepositoryItem;
 
 class Network
 {
diff --git a/src/rct2/S6Exporter.h b/src/rct2/S6Exporter.h
index 9218855cdd..96cba63b6e 100644
--- a/src/rct2/S6Exporter.h
+++ b/src/rct2/S6Exporter.h
@@ -27,7 +27,7 @@ extern "C"
     #include "../object_list.h"
 }
 
-class ObjectRepositoryItem;
+struct ObjectRepositoryItem;
 
 int scenario_save_network(SDL_RWops* rw, const std::vector<const ObjectRepositoryItem *> &objects);
 int scenario_write_packed_objects(SDL_RWops* rw, std::vector<const ObjectRepositoryItem *> &objects);